./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/bigshot_s.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/pthread/bigshot_s.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/bigshot_s.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:03:34,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:03:34,814 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:03:34,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:03:34,822 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:03:34,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:03:34,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:03:34,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:03:34,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:03:34,846 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:03:34,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:03:34,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:03:34,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:03:34,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:03:34,847 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:03:34,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:03:34,847 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:03:34,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:03:34,847 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:03:34,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:03:34,848 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:03:34,848 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:03:34,848 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:03:34,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:03:34,848 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:03:34,848 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:03:34,848 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:03:34,848 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:03:34,849 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:03:34,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:03:34,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:03:34,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:03:34,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:03:34,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:03:34,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:03:34,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:03:34,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:03:34,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:03:34,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:03:34,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:03:34,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:03:34,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:03:34,851 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe [2024-11-07 19:03:35,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:03:35,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:03:35,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:03:35,154 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:03:35,154 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:03:35,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/bigshot_s.i [2024-11-07 19:03:36,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:03:36,742 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:03:36,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/bigshot_s.i [2024-11-07 19:03:36,774 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5bc3407f/a84e1965d3d149a980327a2350c7b83e/FLAG8a9aad0a6 [2024-11-07 19:03:37,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d5bc3407f/a84e1965d3d149a980327a2350c7b83e [2024-11-07 19:03:37,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:03:37,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:03:37,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:03:37,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:03:37,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:03:37,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d997eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37, skipping insertion in model container [2024-11-07 19:03:37,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,102 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:03:37,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:03:37,557 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:03:37,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:03:37,676 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:03:37,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37 WrapperNode [2024-11-07 19:03:37,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:03:37,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:03:37,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:03:37,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:03:37,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,739 INFO L138 Inliner]: procedures = 322, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-07 19:03:37,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:03:37,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:03:37,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:03:37,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:03:37,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,763 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 9, 2]. 69 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-11-07 19:03:37,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:03:37,784 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:03:37,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:03:37,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:03:37,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (1/1) ... [2024-11-07 19:03:37,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:03:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:37,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 19:03:37,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 19:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-07 19:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-07 19:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-07 19:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 19:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 19:03:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 19:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 19:03:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 19:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 19:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 19:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:03:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:03:37,838 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 19:03:37,941 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:03:37,943 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:03:38,151 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:03:38,151 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:03:38,252 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:03:38,253 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 19:03:38,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:03:38 BoogieIcfgContainer [2024-11-07 19:03:38,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:03:38,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:03:38,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:03:38,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:03:38,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:03:37" (1/3) ... [2024-11-07 19:03:38,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541564a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:03:38, skipping insertion in model container [2024-11-07 19:03:38,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:03:37" (2/3) ... [2024-11-07 19:03:38,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541564a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:03:38, skipping insertion in model container [2024-11-07 19:03:38,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:03:38" (3/3) ... [2024-11-07 19:03:38,263 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2024-11-07 19:03:38,276 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:03:38,276 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-07 19:03:38,276 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:03:38,328 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:03:38,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 108 flow [2024-11-07 19:03:38,392 INFO L124 PetriNetUnfolderBase]: 6/45 cut-off events. [2024-11-07 19:03:38,394 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:03:38,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 45 events. 6/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 72 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-07 19:03:38,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 108 flow [2024-11-07 19:03:38,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 100 flow [2024-11-07 19:03:38,410 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:03:38,424 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36ccc5a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:03:38,424 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-07 19:03:38,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:03:38,430 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2024-11-07 19:03:38,430 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:03:38,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:38,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:38,431 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:38,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1745696950, now seen corresponding path program 1 times [2024-11-07 19:03:38,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:38,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73342044] [2024-11-07 19:03:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:38,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:38,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:38,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73342044] [2024-11-07 19:03:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73342044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:03:38,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:03:38,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:03:38,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90685895] [2024-11-07 19:03:38,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:03:38,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:03:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:38,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:03:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:03:38,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-07 19:03:38,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:38,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:38,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-07 19:03:38,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:39,049 INFO L124 PetriNetUnfolderBase]: 11/60 cut-off events. [2024-11-07 19:03:39,051 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:03:39,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 60 events. 11/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 143 event pairs, 3 based on Foata normal form. 2/51 useless extension candidates. Maximal degree in co-relation 84. Up to 24 conditions per place. [2024-11-07 19:03:39,052 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 19 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-11-07 19:03:39,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 134 flow [2024-11-07 19:03:39,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:03:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:03:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-07 19:03:39,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-11-07 19:03:39,067 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 100 flow. Second operand 4 states and 103 transitions. [2024-11-07 19:03:39,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 134 flow [2024-11-07 19:03:39,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 126 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:03:39,075 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 86 flow [2024-11-07 19:03:39,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-07 19:03:39,081 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2024-11-07 19:03:39,081 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 86 flow [2024-11-07 19:03:39,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:39,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:39,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:39,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:03:39,082 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:39,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1717969130, now seen corresponding path program 1 times [2024-11-07 19:03:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:39,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990471974] [2024-11-07 19:03:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:39,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:39,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:39,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990471974] [2024-11-07 19:03:39,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990471974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:03:39,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:03:39,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:03:39,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978531731] [2024-11-07 19:03:39,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:03:39,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:03:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:39,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:03:39,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:03:39,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-07 19:03:39,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:39,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:39,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-07 19:03:39,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:39,441 INFO L124 PetriNetUnfolderBase]: 16/76 cut-off events. [2024-11-07 19:03:39,441 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 19:03:39,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 76 events. 16/76 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 7 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 53. Up to 40 conditions per place. [2024-11-07 19:03:39,442 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 22 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-11-07 19:03:39,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 148 flow [2024-11-07 19:03:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:03:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:03:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-07 19:03:39,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-07 19:03:39,445 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 86 flow. Second operand 4 states and 108 transitions. [2024-11-07 19:03:39,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 148 flow [2024-11-07 19:03:39,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:03:39,447 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 103 flow [2024-11-07 19:03:39,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-11-07 19:03:39,449 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2024-11-07 19:03:39,449 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 103 flow [2024-11-07 19:03:39,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:39,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:39,450 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:39,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:03:39,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:39,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:39,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1717435208, now seen corresponding path program 1 times [2024-11-07 19:03:39,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:39,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287681249] [2024-11-07 19:03:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:39,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:39,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:39,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287681249] [2024-11-07 19:03:39,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287681249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:03:39,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:03:39,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:03:39,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162124542] [2024-11-07 19:03:39,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:03:39,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:03:39,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:03:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:03:39,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-11-07 19:03:39,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:39,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:39,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-11-07 19:03:39,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:39,648 INFO L124 PetriNetUnfolderBase]: 15/77 cut-off events. [2024-11-07 19:03:39,648 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-07 19:03:39,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 77 events. 15/77 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 176 event pairs, 1 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 49. Up to 20 conditions per place. [2024-11-07 19:03:39,650 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 19 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-07 19:03:39,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 149 flow [2024-11-07 19:03:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:03:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:03:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-07 19:03:39,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-11-07 19:03:39,652 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 103 flow. Second operand 4 states and 107 transitions. [2024-11-07 19:03:39,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 149 flow [2024-11-07 19:03:39,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:03:39,654 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 102 flow [2024-11-07 19:03:39,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-07 19:03:39,655 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2024-11-07 19:03:39,655 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 102 flow [2024-11-07 19:03:39,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:39,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:39,655 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:39,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:03:39,656 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:39,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:39,656 INFO L85 PathProgramCache]: Analyzing trace with hash -850989204, now seen corresponding path program 1 times [2024-11-07 19:03:39,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:39,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950087058] [2024-11-07 19:03:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:39,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:39,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:39,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950087058] [2024-11-07 19:03:39,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950087058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:03:39,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:03:39,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:03:39,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085160567] [2024-11-07 19:03:39,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:03:39,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:03:39,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:39,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:03:39,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:03:39,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-11-07 19:03:39,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:39,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:39,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-11-07 19:03:39,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:39,915 INFO L124 PetriNetUnfolderBase]: 14/66 cut-off events. [2024-11-07 19:03:39,915 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-07 19:03:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 66 events. 14/66 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 4 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 49. Up to 31 conditions per place. [2024-11-07 19:03:39,915 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 20 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-07 19:03:39,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 154 flow [2024-11-07 19:03:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:03:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:03:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-07 19:03:39,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-11-07 19:03:39,917 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 102 flow. Second operand 4 states and 114 transitions. [2024-11-07 19:03:39,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 154 flow [2024-11-07 19:03:39,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:03:39,919 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 105 flow [2024-11-07 19:03:39,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-07 19:03:39,920 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2024-11-07 19:03:39,920 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 105 flow [2024-11-07 19:03:39,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:39,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:39,920 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:39,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:03:39,921 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:39,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:39,921 INFO L85 PathProgramCache]: Analyzing trace with hash -391476111, now seen corresponding path program 1 times [2024-11-07 19:03:39,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:39,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354982254] [2024-11-07 19:03:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:39,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:40,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:40,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354982254] [2024-11-07 19:03:40,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354982254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:40,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5660997] [2024-11-07 19:03:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:40,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:40,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:40,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:40,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 19:03:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:40,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 19:03:40,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:40,304 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 19:03:40,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-07 19:03:40,329 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 19:03:40,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 19:03:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:40,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5660997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:40,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:40,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-07 19:03:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363321678] [2024-11-07 19:03:40,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:40,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:03:40,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:03:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:03:40,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-07 19:03:40,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 105 flow. Second operand has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:40,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:40,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-07 19:03:40,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:41,198 INFO L124 PetriNetUnfolderBase]: 33/126 cut-off events. [2024-11-07 19:03:41,199 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-07 19:03:41,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 126 events. 33/126 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 221 event pairs, 6 based on Foata normal form. 12/135 useless extension candidates. Maximal degree in co-relation 95. Up to 38 conditions per place. [2024-11-07 19:03:41,200 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 32 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2024-11-07 19:03:41,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 233 flow [2024-11-07 19:03:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:03:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:03:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-11-07 19:03:41,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-11-07 19:03:41,202 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 105 flow. Second operand 7 states and 175 transitions. [2024-11-07 19:03:41,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 233 flow [2024-11-07 19:03:41,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 225 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:03:41,204 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 159 flow [2024-11-07 19:03:41,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-07 19:03:41,205 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-07 19:03:41,205 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 159 flow [2024-11-07 19:03:41,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:41,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:41,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:41,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 19:03:41,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:41,410 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:41,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1646348453, now seen corresponding path program 1 times [2024-11-07 19:03:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:41,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59859613] [2024-11-07 19:03:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:41,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:41,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:41,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59859613] [2024-11-07 19:03:41,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59859613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:03:41,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:03:41,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:03:41,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746009538] [2024-11-07 19:03:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:03:41,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:03:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:03:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:03:41,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:03:41,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:41,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:41,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:03:41,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:41,495 INFO L124 PetriNetUnfolderBase]: 21/109 cut-off events. [2024-11-07 19:03:41,495 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-07 19:03:41,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 109 events. 21/109 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 206 event pairs, 11 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 171. Up to 51 conditions per place. [2024-11-07 19:03:41,496 INFO L140 encePairwiseOnDemand]: 45/47 looper letters, 24 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-11-07 19:03:41,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 209 flow [2024-11-07 19:03:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:03:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:03:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-07 19:03:41,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2024-11-07 19:03:41,497 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 159 flow. Second operand 3 states and 89 transitions. [2024-11-07 19:03:41,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 209 flow [2024-11-07 19:03:41,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 193 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-07 19:03:41,500 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 143 flow [2024-11-07 19:03:41,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-07 19:03:41,501 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-07 19:03:41,501 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 143 flow [2024-11-07 19:03:41,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:41,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:41,501 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:41,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:03:41,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:41,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:41,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1748588019, now seen corresponding path program 1 times [2024-11-07 19:03:41,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401601076] [2024-11-07 19:03:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:41,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:41,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:41,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401601076] [2024-11-07 19:03:41,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401601076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:41,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023970857] [2024-11-07 19:03:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:41,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:41,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:41,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:41,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 19:03:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:41,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 19:03:41,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:41,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-07 19:03:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:41,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:41,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023970857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:41,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:41,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 19:03:41,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850575287] [2024-11-07 19:03:41,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:41,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:03:41,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:41,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:03:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:03:42,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-11-07 19:03:42,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 143 flow. Second operand has 11 states, 11 states have (on average 23.727272727272727) internal successors, (261), 11 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:42,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:42,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-11-07 19:03:42,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:42,280 INFO L124 PetriNetUnfolderBase]: 26/115 cut-off events. [2024-11-07 19:03:42,280 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-07 19:03:42,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 115 events. 26/115 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 190 event pairs, 4 based on Foata normal form. 6/117 useless extension candidates. Maximal degree in co-relation 231. Up to 30 conditions per place. [2024-11-07 19:03:42,281 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 27 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-11-07 19:03:42,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 243 flow [2024-11-07 19:03:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:03:42,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:03:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-07 19:03:42,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-07 19:03:42,283 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 143 flow. Second operand 7 states and 188 transitions. [2024-11-07 19:03:42,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 243 flow [2024-11-07 19:03:42,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:03:42,285 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 192 flow [2024-11-07 19:03:42,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2024-11-07 19:03:42,286 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-11-07 19:03:42,286 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 192 flow [2024-11-07 19:03:42,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.727272727272727) internal successors, (261), 11 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:42,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:42,286 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:42,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 19:03:42,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:42,491 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:42,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash 177837018, now seen corresponding path program 1 times [2024-11-07 19:03:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:42,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206435911] [2024-11-07 19:03:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:42,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:42,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206435911] [2024-11-07 19:03:42,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206435911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:03:42,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:03:42,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:03:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683614755] [2024-11-07 19:03:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:03:42,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:03:42,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:42,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:03:42,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:03:42,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-07 19:03:42,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:42,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:42,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-07 19:03:42,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:42,631 INFO L124 PetriNetUnfolderBase]: 20/108 cut-off events. [2024-11-07 19:03:42,633 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-07 19:03:42,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 108 events. 20/108 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 11 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 263. Up to 51 conditions per place. [2024-11-07 19:03:42,635 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 24 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-11-07 19:03:42,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 41 transitions, 246 flow [2024-11-07 19:03:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:03:42,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:03:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-07 19:03:42,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-11-07 19:03:42,637 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 192 flow. Second operand 4 states and 102 transitions. [2024-11-07 19:03:42,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 41 transitions, 246 flow [2024-11-07 19:03:42,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 41 transitions, 232 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 19:03:42,641 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 182 flow [2024-11-07 19:03:42,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-11-07 19:03:42,643 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-11-07 19:03:42,644 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 182 flow [2024-11-07 19:03:42,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:42,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:42,644 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:42,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:03:42,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:42,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1253845180, now seen corresponding path program 1 times [2024-11-07 19:03:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:42,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719702190] [2024-11-07 19:03:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:42,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:42,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719702190] [2024-11-07 19:03:42,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719702190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:03:42,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:03:42,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 19:03:42,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366615809] [2024-11-07 19:03:42,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:03:42,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 19:03:42,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:42,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 19:03:42,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-07 19:03:43,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-07 19:03:43,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 182 flow. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:43,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:43,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-07 19:03:43,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:43,258 INFO L124 PetriNetUnfolderBase]: 24/129 cut-off events. [2024-11-07 19:03:43,258 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-07 19:03:43,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 129 events. 24/129 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 12 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 303. Up to 53 conditions per place. [2024-11-07 19:03:43,259 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 31 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2024-11-07 19:03:43,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 303 flow [2024-11-07 19:03:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:03:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:03:43,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 256 transitions. [2024-11-07 19:03:43,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-11-07 19:03:43,261 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 182 flow. Second operand 12 states and 256 transitions. [2024-11-07 19:03:43,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 303 flow [2024-11-07 19:03:43,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 293 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:03:43,264 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 240 flow [2024-11-07 19:03:43,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=240, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2024-11-07 19:03:43,265 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2024-11-07 19:03:43,265 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 240 flow [2024-11-07 19:03:43,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:43,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:43,266 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:43,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:03:43,266 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:43,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:43,267 INFO L85 PathProgramCache]: Analyzing trace with hash 391753353, now seen corresponding path program 1 times [2024-11-07 19:03:43,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:43,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587136562] [2024-11-07 19:03:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:43,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:43,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587136562] [2024-11-07 19:03:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587136562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:03:43,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:03:43,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 19:03:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65981276] [2024-11-07 19:03:43,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:03:43,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 19:03:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 19:03:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-07 19:03:43,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-07 19:03:43,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 240 flow. Second operand has 9 states, 9 states have (on average 21.0) internal successors, (189), 9 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:43,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:43,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-07 19:03:43,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:43,830 INFO L124 PetriNetUnfolderBase]: 20/121 cut-off events. [2024-11-07 19:03:43,830 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-11-07 19:03:43,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 121 events. 20/121 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 9 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 326. Up to 45 conditions per place. [2024-11-07 19:03:43,832 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 24 selfloop transitions, 7 changer transitions 8/53 dead transitions. [2024-11-07 19:03:43,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 53 transitions, 329 flow [2024-11-07 19:03:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 19:03:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 19:03:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2024-11-07 19:03:43,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2024-11-07 19:03:43,834 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 240 flow. Second operand 10 states and 226 transitions. [2024-11-07 19:03:43,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 53 transitions, 329 flow [2024-11-07 19:03:43,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 53 transitions, 319 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:03:43,839 INFO L231 Difference]: Finished difference. Result has 73 places, 42 transitions, 215 flow [2024-11-07 19:03:43,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=215, PETRI_PLACES=73, PETRI_TRANSITIONS=42} [2024-11-07 19:03:43,840 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-11-07 19:03:43,840 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 42 transitions, 215 flow [2024-11-07 19:03:43,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.0) internal successors, (189), 9 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:43,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:43,841 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:43,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:03:43,841 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:43,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2058489303, now seen corresponding path program 1 times [2024-11-07 19:03:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:43,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124646315] [2024-11-07 19:03:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:43,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:44,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:44,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124646315] [2024-11-07 19:03:44,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124646315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:44,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761844124] [2024-11-07 19:03:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:44,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:44,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:44,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:44,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 19:03:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:44,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:03:44,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:44,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 19:03:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:44,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761844124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:44,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:44,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-07 19:03:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614894412] [2024-11-07 19:03:44,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:44,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:03:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:03:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:03:44,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:03:44,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 42 transitions, 215 flow. Second operand has 14 states, 14 states have (on average 26.071428571428573) internal successors, (365), 14 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:44,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:44,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:03:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:44,720 INFO L124 PetriNetUnfolderBase]: 19/110 cut-off events. [2024-11-07 19:03:44,720 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-07 19:03:44,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 110 events. 19/110 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 9 based on Foata normal form. 2/111 useless extension candidates. Maximal degree in co-relation 293. Up to 41 conditions per place. [2024-11-07 19:03:44,721 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 6 changer transitions 1/46 dead transitions. [2024-11-07 19:03:44,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 46 transitions, 280 flow [2024-11-07 19:03:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:03:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:03:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-11-07 19:03:44,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5805471124620061 [2024-11-07 19:03:44,722 INFO L175 Difference]: Start difference. First operand has 73 places, 42 transitions, 215 flow. Second operand 7 states and 191 transitions. [2024-11-07 19:03:44,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 46 transitions, 280 flow [2024-11-07 19:03:44,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 258 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-11-07 19:03:44,725 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 203 flow [2024-11-07 19:03:44,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2024-11-07 19:03:44,725 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2024-11-07 19:03:44,725 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 203 flow [2024-11-07 19:03:44,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.071428571428573) internal successors, (365), 14 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:44,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:44,726 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:44,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 19:03:44,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:44,927 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:44,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:44,927 INFO L85 PathProgramCache]: Analyzing trace with hash -485710670, now seen corresponding path program 2 times [2024-11-07 19:03:44,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:44,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352415650] [2024-11-07 19:03:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:44,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:45,161 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:45,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:45,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352415650] [2024-11-07 19:03:45,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352415650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:45,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918888292] [2024-11-07 19:03:45,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:03:45,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:45,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:45,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:45,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 19:03:45,246 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:03:45,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:03:45,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 19:03:45,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:45,276 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 19:03:45,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 19:03:45,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-07 19:03:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:45,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918888292] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:45,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:45,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-07 19:03:45,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409067855] [2024-11-07 19:03:45,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:45,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 19:03:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 19:03:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-07 19:03:46,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-07 19:03:46,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 203 flow. Second operand has 23 states, 23 states have (on average 21.391304347826086) internal successors, (492), 23 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:46,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:46,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-07 19:03:46,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:46,842 INFO L124 PetriNetUnfolderBase]: 50/197 cut-off events. [2024-11-07 19:03:46,842 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2024-11-07 19:03:46,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 197 events. 50/197 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 313 event pairs, 6 based on Foata normal form. 8/204 useless extension candidates. Maximal degree in co-relation 590. Up to 40 conditions per place. [2024-11-07 19:03:46,844 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 47 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-11-07 19:03:46,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 491 flow [2024-11-07 19:03:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:03:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:03:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-11-07 19:03:46,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5145067698259188 [2024-11-07 19:03:46,846 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 203 flow. Second operand 11 states and 266 transitions. [2024-11-07 19:03:46,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 491 flow [2024-11-07 19:03:46,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 76 transitions, 479 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-07 19:03:46,851 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 335 flow [2024-11-07 19:03:46,852 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=335, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2024-11-07 19:03:46,853 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2024-11-07 19:03:46,854 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 335 flow [2024-11-07 19:03:46,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.391304347826086) internal successors, (492), 23 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:46,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:46,855 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:46,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 19:03:47,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 19:03:47,059 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:47,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1383490036, now seen corresponding path program 2 times [2024-11-07 19:03:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:47,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583705245] [2024-11-07 19:03:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:47,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:47,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583705245] [2024-11-07 19:03:47,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583705245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:47,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583464531] [2024-11-07 19:03:47,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:03:47,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:47,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:47,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:47,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 19:03:47,354 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 19:03:47,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:03:47,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 19:03:47,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:47,391 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 19:03:47,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 19:03:47,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-07 19:03:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-07 19:03:47,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-07 19:03:48,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583464531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:48,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:48,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 15 [2024-11-07 19:03:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184156418] [2024-11-07 19:03:48,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:48,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 19:03:48,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 19:03:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-07 19:03:48,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-11-07 19:03:48,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 335 flow. Second operand has 16 states, 16 states have (on average 22.8125) internal successors, (365), 16 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:48,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:48,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-11-07 19:03:48,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:49,118 INFO L124 PetriNetUnfolderBase]: 57/196 cut-off events. [2024-11-07 19:03:49,118 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2024-11-07 19:03:49,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 196 events. 57/196 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 277 event pairs, 2 based on Foata normal form. 8/203 useless extension candidates. Maximal degree in co-relation 634. Up to 45 conditions per place. [2024-11-07 19:03:49,120 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 45 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-11-07 19:03:49,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 561 flow [2024-11-07 19:03:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 19:03:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 19:03:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 390 transitions. [2024-11-07 19:03:49,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4881101376720901 [2024-11-07 19:03:49,124 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 335 flow. Second operand 17 states and 390 transitions. [2024-11-07 19:03:49,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 561 flow [2024-11-07 19:03:49,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 533 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-07 19:03:49,132 INFO L231 Difference]: Finished difference. Result has 81 places, 54 transitions, 374 flow [2024-11-07 19:03:49,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=374, PETRI_PLACES=81, PETRI_TRANSITIONS=54} [2024-11-07 19:03:49,135 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-11-07 19:03:49,135 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 54 transitions, 374 flow [2024-11-07 19:03:49,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.8125) internal successors, (365), 16 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:49,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:49,136 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:49,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 19:03:49,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-07 19:03:49,337 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:49,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:49,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1894038446, now seen corresponding path program 2 times [2024-11-07 19:03:49,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:49,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371714267] [2024-11-07 19:03:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:49,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:49,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:49,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371714267] [2024-11-07 19:03:49,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371714267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:49,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125688654] [2024-11-07 19:03:49,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:03:49,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:49,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:49,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:49,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 19:03:49,625 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:03:49,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:03:49,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 19:03:49,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:49,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 19:03:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:49,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:49,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125688654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:49,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:49,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-07 19:03:49,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928302369] [2024-11-07 19:03:49,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:49,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 19:03:49,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:49,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 19:03:49,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:03:50,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:03:50,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 54 transitions, 374 flow. Second operand has 17 states, 17 states have (on average 25.88235294117647) internal successors, (440), 17 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:50,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:50,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:03:50,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:50,356 INFO L124 PetriNetUnfolderBase]: 35/172 cut-off events. [2024-11-07 19:03:50,357 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2024-11-07 19:03:50,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 172 events. 35/172 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 250 event pairs, 18 based on Foata normal form. 2/173 useless extension candidates. Maximal degree in co-relation 546. Up to 74 conditions per place. [2024-11-07 19:03:50,358 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-11-07 19:03:50,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 59 transitions, 456 flow [2024-11-07 19:03:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:03:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:03:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-11-07 19:03:50,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-07 19:03:50,360 INFO L175 Difference]: Start difference. First operand has 81 places, 54 transitions, 374 flow. Second operand 8 states and 216 transitions. [2024-11-07 19:03:50,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 59 transitions, 456 flow [2024-11-07 19:03:50,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 59 transitions, 390 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-07 19:03:50,364 INFO L231 Difference]: Finished difference. Result has 80 places, 54 transitions, 324 flow [2024-11-07 19:03:50,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=324, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2024-11-07 19:03:50,364 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-11-07 19:03:50,364 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 324 flow [2024-11-07 19:03:50,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 25.88235294117647) internal successors, (440), 17 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:50,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:50,365 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:50,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 19:03:50,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-07 19:03:50,570 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:50,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash 784914715, now seen corresponding path program 3 times [2024-11-07 19:03:50,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:50,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596221246] [2024-11-07 19:03:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:50,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:50,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596221246] [2024-11-07 19:03:50,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596221246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:50,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844478042] [2024-11-07 19:03:50,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:03:50,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:50,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:50,782 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:50,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 19:03:50,880 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 19:03:50,880 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:03:50,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 19:03:50,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:51,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 19:03:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:51,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:51,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844478042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:51,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:51,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-07 19:03:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082250995] [2024-11-07 19:03:51,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:51,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 19:03:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 19:03:51,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-07 19:03:51,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:03:51,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 324 flow. Second operand has 20 states, 20 states have (on average 25.85) internal successors, (517), 20 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:51,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:51,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:03:51,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:51,841 INFO L124 PetriNetUnfolderBase]: 32/167 cut-off events. [2024-11-07 19:03:51,841 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-11-07 19:03:51,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 167 events. 32/167 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 15 based on Foata normal form. 2/168 useless extension candidates. Maximal degree in co-relation 496. Up to 63 conditions per place. [2024-11-07 19:03:51,842 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-11-07 19:03:51,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 60 transitions, 415 flow [2024-11-07 19:03:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:03:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:03:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-11-07 19:03:51,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5721040189125296 [2024-11-07 19:03:51,844 INFO L175 Difference]: Start difference. First operand has 80 places, 54 transitions, 324 flow. Second operand 9 states and 242 transitions. [2024-11-07 19:03:51,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 60 transitions, 415 flow [2024-11-07 19:03:51,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 60 transitions, 399 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-07 19:03:51,847 INFO L231 Difference]: Finished difference. Result has 84 places, 54 transitions, 331 flow [2024-11-07 19:03:51,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=331, PETRI_PLACES=84, PETRI_TRANSITIONS=54} [2024-11-07 19:03:51,847 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 39 predicate places. [2024-11-07 19:03:51,847 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 54 transitions, 331 flow [2024-11-07 19:03:51,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 25.85) internal successors, (517), 20 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:51,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:51,848 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:51,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 19:03:52,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:52,049 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:52,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1620704952, now seen corresponding path program 4 times [2024-11-07 19:03:52,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:52,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731338831] [2024-11-07 19:03:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:52,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:52,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:52,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731338831] [2024-11-07 19:03:52,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731338831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:52,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847151182] [2024-11-07 19:03:52,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 19:03:52,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:52,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:52,311 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:52,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 19:03:52,404 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 19:03:52,404 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:03:52,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-07 19:03:52,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:52,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 19:03:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:52,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:52,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847151182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:52,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:52,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-07 19:03:52,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820254797] [2024-11-07 19:03:52,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:52,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 19:03:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:52,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 19:03:52,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-11-07 19:03:53,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:03:53,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 54 transitions, 331 flow. Second operand has 23 states, 23 states have (on average 25.73913043478261) internal successors, (592), 23 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:53,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:53,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:03:53,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:53,548 INFO L124 PetriNetUnfolderBase]: 29/162 cut-off events. [2024-11-07 19:03:53,549 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-11-07 19:03:53,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 162 events. 29/162 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 12 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 488. Up to 52 conditions per place. [2024-11-07 19:03:53,550 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2024-11-07 19:03:53,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 61 transitions, 427 flow [2024-11-07 19:03:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 19:03:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 19:03:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-11-07 19:03:53,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5702127659574469 [2024-11-07 19:03:53,552 INFO L175 Difference]: Start difference. First operand has 84 places, 54 transitions, 331 flow. Second operand 10 states and 268 transitions. [2024-11-07 19:03:53,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 61 transitions, 427 flow [2024-11-07 19:03:53,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 61 transitions, 407 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-07 19:03:53,557 INFO L231 Difference]: Finished difference. Result has 88 places, 54 transitions, 337 flow [2024-11-07 19:03:53,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=337, PETRI_PLACES=88, PETRI_TRANSITIONS=54} [2024-11-07 19:03:53,557 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-11-07 19:03:53,557 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 54 transitions, 337 flow [2024-11-07 19:03:53,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.73913043478261) internal successors, (592), 23 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:53,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:53,558 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:53,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-07 19:03:53,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 19:03:53,758 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:53,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash -854395871, now seen corresponding path program 5 times [2024-11-07 19:03:53,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:53,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829444479] [2024-11-07 19:03:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:53,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:54,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:54,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829444479] [2024-11-07 19:03:54,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829444479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:54,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099210952] [2024-11-07 19:03:54,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 19:03:54,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:54,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:54,083 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:54,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 19:03:54,183 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-07 19:03:54,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:03:54,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-07 19:03:54,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:54,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 19:03:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:54,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099210952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:54,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:54,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-07 19:03:54,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843526568] [2024-11-07 19:03:54,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:54,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 19:03:54,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:54,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 19:03:54,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-07 19:03:55,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:03:55,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 54 transitions, 337 flow. Second operand has 26 states, 26 states have (on average 25.653846153846153) internal successors, (667), 26 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:55,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:55,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:03:55,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:55,703 INFO L124 PetriNetUnfolderBase]: 26/157 cut-off events. [2024-11-07 19:03:55,703 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-11-07 19:03:55,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 157 events. 26/157 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 9 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 472. Up to 41 conditions per place. [2024-11-07 19:03:55,704 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-11-07 19:03:55,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 62 transitions, 438 flow [2024-11-07 19:03:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:03:55,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:03:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2024-11-07 19:03:55,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5686653771760155 [2024-11-07 19:03:55,706 INFO L175 Difference]: Start difference. First operand has 88 places, 54 transitions, 337 flow. Second operand 11 states and 294 transitions. [2024-11-07 19:03:55,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 62 transitions, 438 flow [2024-11-07 19:03:55,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 62 transitions, 414 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-07 19:03:55,709 INFO L231 Difference]: Finished difference. Result has 92 places, 54 transitions, 342 flow [2024-11-07 19:03:55,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=342, PETRI_PLACES=92, PETRI_TRANSITIONS=54} [2024-11-07 19:03:55,710 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2024-11-07 19:03:55,710 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 54 transitions, 342 flow [2024-11-07 19:03:55,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 25.653846153846153) internal successors, (667), 26 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:55,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:55,710 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:55,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 19:03:55,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:55,915 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:55,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:55,915 INFO L85 PathProgramCache]: Analyzing trace with hash 791631438, now seen corresponding path program 3 times [2024-11-07 19:03:55,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:55,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881345538] [2024-11-07 19:03:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:55,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 16 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:56,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881345538] [2024-11-07 19:03:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881345538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671271580] [2024-11-07 19:03:56,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:03:56,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:56,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:56,286 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:56,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 19:03:56,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 19:03:56,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:03:56,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 19:03:56,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:56,424 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-07 19:03:56,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-07 19:03:56,438 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-07 19:03:56,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-07 19:03:56,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 19:03:56,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-07 19:03:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-07 19:03:56,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-07 19:03:57,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671271580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:57,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 23 [2024-11-07 19:03:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866319936] [2024-11-07 19:03:57,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:57,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 19:03:57,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:57,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 19:03:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-11-07 19:03:57,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-07 19:03:57,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 54 transitions, 342 flow. Second operand has 24 states, 24 states have (on average 21.166666666666668) internal successors, (508), 24 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:57,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:03:57,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-07 19:03:57,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:03:58,282 INFO L124 PetriNetUnfolderBase]: 39/164 cut-off events. [2024-11-07 19:03:58,282 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2024-11-07 19:03:58,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 164 events. 39/164 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 189 event pairs, 3 based on Foata normal form. 2/165 useless extension candidates. Maximal degree in co-relation 498. Up to 37 conditions per place. [2024-11-07 19:03:58,284 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 47 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-11-07 19:03:58,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 69 transitions, 474 flow [2024-11-07 19:03:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:03:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:03:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 276 transitions. [2024-11-07 19:03:58,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-11-07 19:03:58,286 INFO L175 Difference]: Start difference. First operand has 92 places, 54 transitions, 342 flow. Second operand 12 states and 276 transitions. [2024-11-07 19:03:58,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 69 transitions, 474 flow [2024-11-07 19:03:58,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 69 transitions, 408 flow, removed 7 selfloop flow, removed 19 redundant places. [2024-11-07 19:03:58,290 INFO L231 Difference]: Finished difference. Result has 83 places, 51 transitions, 264 flow [2024-11-07 19:03:58,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=83, PETRI_TRANSITIONS=51} [2024-11-07 19:03:58,292 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2024-11-07 19:03:58,292 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 51 transitions, 264 flow [2024-11-07 19:03:58,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 21.166666666666668) internal successors, (508), 24 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:03:58,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:03:58,292 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:03:58,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 19:03:58,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 19:03:58,496 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:03:58,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:03:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1861373402, now seen corresponding path program 6 times [2024-11-07 19:03:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:03:58,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867507969] [2024-11-07 19:03:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:03:58,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:03:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:03:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:58,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:03:58,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867507969] [2024-11-07 19:03:58,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867507969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:03:58,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642582372] [2024-11-07 19:03:58,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 19:03:58,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:03:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:03:58,817 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:03:58,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-07 19:03:58,909 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-07 19:03:58,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:03:58,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-07 19:03:58,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:03:59,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-07 19:03:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:59,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:03:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:03:59,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642582372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:03:59,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:03:59,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-11-07 19:03:59,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322962514] [2024-11-07 19:03:59,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:03:59,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 19:03:59,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:03:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 19:03:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-11-07 19:04:00,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:04:00,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 51 transitions, 264 flow. Second operand has 29 states, 29 states have (on average 25.517241379310345) internal successors, (740), 29 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:00,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:00,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:04:00,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:00,500 INFO L124 PetriNetUnfolderBase]: 20/143 cut-off events. [2024-11-07 19:04:00,500 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-11-07 19:04:00,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 143 events. 20/143 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 129 event pairs, 5 based on Foata normal form. 2/144 useless extension candidates. Maximal degree in co-relation 366. Up to 27 conditions per place. [2024-11-07 19:04:00,501 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 30 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-11-07 19:04:00,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 59 transitions, 355 flow [2024-11-07 19:04:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:04:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:04:00,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 318 transitions. [2024-11-07 19:04:00,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-11-07 19:04:00,502 INFO L175 Difference]: Start difference. First operand has 83 places, 51 transitions, 264 flow. Second operand 12 states and 318 transitions. [2024-11-07 19:04:00,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 59 transitions, 355 flow [2024-11-07 19:04:00,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 59 transitions, 305 flow, removed 6 selfloop flow, removed 17 redundant places. [2024-11-07 19:04:00,504 INFO L231 Difference]: Finished difference. Result has 78 places, 50 transitions, 231 flow [2024-11-07 19:04:00,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=231, PETRI_PLACES=78, PETRI_TRANSITIONS=50} [2024-11-07 19:04:00,504 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-11-07 19:04:00,504 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 50 transitions, 231 flow [2024-11-07 19:04:00,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 25.517241379310345) internal successors, (740), 29 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:00,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:00,505 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:00,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-07 19:04:00,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:04:00,705 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:00,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:00,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1714612845, now seen corresponding path program 7 times [2024-11-07 19:04:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:04:00,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858364258] [2024-11-07 19:04:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:00,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:04:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:04:00,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:04:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:04:00,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:04:00,786 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:04:00,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2024-11-07 19:04:00,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-07 19:04:00,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-11-07 19:04:00,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-11-07 19:04:00,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-11-07 19:04:00,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-11-07 19:04:00,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-07 19:04:00,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-07 19:04:00,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2024-11-07 19:04:00,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (8 of 18 remaining) [2024-11-07 19:04:00,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2024-11-07 19:04:00,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2024-11-07 19:04:00,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-07 19:04:00,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-07 19:04:00,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-07 19:04:00,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-07 19:04:00,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2024-11-07 19:04:00,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2024-11-07 19:04:00,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 19:04:00,792 INFO L407 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:00,842 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-07 19:04:00,843 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 19:04:00,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:04:00 BasicIcfg [2024-11-07 19:04:00,846 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 19:04:00,847 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 19:04:00,847 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 19:04:00,847 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 19:04:00,849 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:03:38" (3/4) ... [2024-11-07 19:04:00,850 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-07 19:04:00,851 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 19:04:00,851 INFO L158 Benchmark]: Toolchain (without parser) took 23798.04ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 89.6MB in the beginning and 171.6MB in the end (delta: -82.0MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2024-11-07 19:04:00,852 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:04:00,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 623.70ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 57.7MB in the end (delta: 31.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-07 19:04:00,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.30ms. Allocated memory is still 117.4MB. Free memory was 57.7MB in the beginning and 55.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:04:00,853 INFO L158 Benchmark]: Boogie Preprocessor took 44.19ms. Allocated memory is still 117.4MB. Free memory was 55.6MB in the beginning and 53.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:04:00,853 INFO L158 Benchmark]: RCFGBuilder took 468.91ms. Allocated memory is still 117.4MB. Free memory was 53.8MB in the beginning and 75.9MB in the end (delta: -22.1MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-11-07 19:04:00,854 INFO L158 Benchmark]: TraceAbstraction took 22590.86ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 75.4MB in the beginning and 171.7MB in the end (delta: -96.3MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2024-11-07 19:04:00,854 INFO L158 Benchmark]: Witness Printer took 3.72ms. Allocated memory is still 243.3MB. Free memory was 171.7MB in the beginning and 171.6MB in the end (delta: 60.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 19:04:00,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 623.70ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 57.7MB in the end (delta: 31.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.30ms. Allocated memory is still 117.4MB. Free memory was 57.7MB in the beginning and 55.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.19ms. Allocated memory is still 117.4MB. Free memory was 55.6MB in the beginning and 53.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 468.91ms. Allocated memory is still 117.4MB. Free memory was 53.8MB in the beginning and 75.9MB in the end (delta: -22.1MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * TraceAbstraction took 22590.86ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 75.4MB in the beginning and 171.7MB in the end (delta: -96.3MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Witness Printer took 3.72ms. Allocated memory is still 243.3MB. Free memory was 171.7MB in the beginning and 171.6MB in the end (delta: 60.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1119]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1119. Possible FailurePath: [L1108] 0 char *v; [L1121] 0 pthread_t t1, t2; [L1122] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, t1=-1, v={0:0}] [L1111] 1 v = malloc(sizeof(char) * 8) [L1112] 1 return 0; [L1123] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=-1, v={-1:0}] [L1124] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=-1, t2=0, v={-1:0}] [L1116] COND TRUE 2 \read(*v) [L1116] CALL 2 strcpy(v, "Bigshot") [L1116] RET 2 strcpy(v, "Bigshot") [L1117] 2 return 0; [L1125] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=-1, t2=0, v={-1:0}] [L1126] EXPR 0 !v || v[0] == 'B' VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=-1, t2=0, v={-1:0}] [L1126] EXPR 0 !v || v[0] == 'B' VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, v={-1:0}] [L1126] EXPR 0 v[0] [L1126] EXPR 0 !v || v[0] == 'B' VAL [\old(arg)={0:0}, \result={0:0}, arg={0:0}, t1=-1, t2=0, v={-1:0}] [L1126] CALL 0 __VERIFIER_assert(!v || v[0] == 'B') [L1107] COND FALSE 0 !(!expression) VAL [\old(arg)={0:0}, \old(expression)=1, \result={0:0}, arg={0:0}, expression=1, v={-1:0}] [L1126] RET 0 __VERIFIER_assert(!v || v[0] == 'B') [L1127] 0 return 0; VAL [\old(arg)={0:0}, \result=0, \result={0:0}, arg={0:0}, t1=-1, t2=0, v={-1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1124]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1122]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 63 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.4s, OverallIterations: 20, TraceHistogramMax: 9, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3052 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2711 mSDsluCounter, 3256 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3193 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15684 IncrementalHoareTripleChecker+Invalid, 15763 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 63 mSDtfsCounter, 15684 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1091 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=13, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 1107 NumberOfCodeBlocks, 1041 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1447 ConstructedInterpolants, 9 QuantifiedInterpolants, 17531 SizeOfPredicates, 42 NumberOfNonLiveVariables, 2179 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 41 InterpolantComputations, 8 PerfectInterpolantSequences, 405/1866 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-07 19:04:00,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/bigshot_s.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:04:02,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:04:03,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-07 19:04:03,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:04:03,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:04:03,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:04:03,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:04:03,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:04:03,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:04:03,135 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:04:03,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:04:03,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:04:03,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:04:03,136 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:04:03,137 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:04:03,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:04:03,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:04:03,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:04:03,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:04:03,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:04:03,138 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:04:03,138 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:04:03,138 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:04:03,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:04:03,138 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:04:03,138 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-07 19:04:03,138 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:04:03,138 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-07 19:04:03,139 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:04:03,139 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:04:03,139 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:04:03,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:04:03,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:04:03,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:04:03,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:04:03,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:04:03,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:04:03,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:04:03,140 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-07 19:04:03,140 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-07 19:04:03,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:04:03,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:04:03,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:04:03,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:04:03,141 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe [2024-11-07 19:04:03,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:04:03,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:04:03,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:04:03,409 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:04:03,409 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:04:03,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/bigshot_s.i [2024-11-07 19:04:04,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:04:05,030 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:04:05,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/bigshot_s.i [2024-11-07 19:04:05,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a5c6daaef/6948f7df3d5148b6b175792107d45041/FLAGd00de4332 [2024-11-07 19:04:05,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a5c6daaef/6948f7df3d5148b6b175792107d45041 [2024-11-07 19:04:05,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:04:05,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:04:05,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:04:05,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:04:05,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:04:05,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecec7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05, skipping insertion in model container [2024-11-07 19:04:05,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:04:05,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:04:05,507 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:04:05,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:04:05,647 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:04:05,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05 WrapperNode [2024-11-07 19:04:05,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:04:05,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:04:05,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:04:05,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:04:05,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,712 INFO L138 Inliner]: procedures = 323, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 68 [2024-11-07 19:04:05,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:04:05,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:04:05,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:04:05,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:04:05,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,746 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 9, 2]. 69 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-11-07 19:04:05,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:04:05,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:04:05,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:04:05,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:04:05,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (1/1) ... [2024-11-07 19:04:05,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:04:05,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:04:05,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 19:04:05,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 19:04:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-07 19:04:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-07 19:04:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-07 19:04:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-07 19:04:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-07 19:04:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-07 19:04:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 19:04:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 19:04:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 19:04:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 19:04:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-07 19:04:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-07 19:04:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2024-11-07 19:04:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 19:04:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:04:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:04:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:04:05,857 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 19:04:05,990 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:04:05,991 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:04:06,189 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:04:06,190 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:04:06,319 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:04:06,319 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 19:04:06,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:04:06 BoogieIcfgContainer [2024-11-07 19:04:06,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:04:06,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:04:06,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:04:06,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:04:06,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:04:05" (1/3) ... [2024-11-07 19:04:06,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7cde09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:04:06, skipping insertion in model container [2024-11-07 19:04:06,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:04:05" (2/3) ... [2024-11-07 19:04:06,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7cde09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:04:06, skipping insertion in model container [2024-11-07 19:04:06,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:04:06" (3/3) ... [2024-11-07 19:04:06,346 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2024-11-07 19:04:06,358 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:04:06,358 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-07 19:04:06,358 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:04:06,411 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:04:06,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 108 flow [2024-11-07 19:04:06,476 INFO L124 PetriNetUnfolderBase]: 6/45 cut-off events. [2024-11-07 19:04:06,480 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:04:06,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 45 events. 6/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-07 19:04:06,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 108 flow [2024-11-07 19:04:06,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 100 flow [2024-11-07 19:04:06,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:04:06,507 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22431ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:04:06,508 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-07 19:04:06,515 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:04:06,515 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2024-11-07 19:04:06,515 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:04:06,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:06,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:06,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:06,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2100677542, now seen corresponding path program 1 times [2024-11-07 19:04:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:06,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580713285] [2024-11-07 19:04:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:06,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:06,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:06,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:06,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-07 19:04:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:06,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:04:06,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:06,734 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-07 19:04:06,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-07 19:04:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:06,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:04:06,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580713285] [2024-11-07 19:04:06,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580713285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:04:06,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:04:06,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:04:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439551804] [2024-11-07 19:04:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:04:06,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:04:06,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:04:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:04:06,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-11-07 19:04:06,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:06,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:06,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-11-07 19:04:06,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:06,953 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-11-07 19:04:06,954 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:04:06,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 58 events. 9/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 2 based on Foata normal form. 4/52 useless extension candidates. Maximal degree in co-relation 76. Up to 21 conditions per place. [2024-11-07 19:04:06,956 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 16 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-11-07 19:04:06,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 128 flow [2024-11-07 19:04:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:04:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:04:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-07 19:04:06,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-11-07 19:04:06,970 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 100 flow. Second operand 4 states and 112 transitions. [2024-11-07 19:04:06,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 128 flow [2024-11-07 19:04:06,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 120 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:04:06,977 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 86 flow [2024-11-07 19:04:06,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-07 19:04:06,983 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2024-11-07 19:04:06,984 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 86 flow [2024-11-07 19:04:06,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:06,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:06,985 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:06,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-07 19:04:07,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:07,188 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:07,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:07,189 INFO L85 PathProgramCache]: Analyzing trace with hash 696494632, now seen corresponding path program 1 times [2024-11-07 19:04:07,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:07,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975553260] [2024-11-07 19:04:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:07,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:07,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:07,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:07,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-07 19:04:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:07,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:04:07,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:07,311 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 19:04:07,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 19:04:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:07,393 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:04:07,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:07,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975553260] [2024-11-07 19:04:07,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975553260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:04:07,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:04:07,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:04:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238082110] [2024-11-07 19:04:07,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:04:07,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:04:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:04:07,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:04:07,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-11-07 19:04:07,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:07,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:07,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-11-07 19:04:07,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:07,517 INFO L124 PetriNetUnfolderBase]: 15/75 cut-off events. [2024-11-07 19:04:07,517 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 19:04:07,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 75 events. 15/75 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 180 event pairs, 6 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 47. Up to 37 conditions per place. [2024-11-07 19:04:07,518 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 20 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-11-07 19:04:07,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 144 flow [2024-11-07 19:04:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:04:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:04:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-07 19:04:07,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-11-07 19:04:07,520 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 86 flow. Second operand 4 states and 114 transitions. [2024-11-07 19:04:07,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 144 flow [2024-11-07 19:04:07,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 136 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:04:07,522 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 103 flow [2024-11-07 19:04:07,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-11-07 19:04:07,523 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2024-11-07 19:04:07,523 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 103 flow [2024-11-07 19:04:07,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:07,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:07,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:07,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-07 19:04:07,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:07,725 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:07,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash 116497384, now seen corresponding path program 1 times [2024-11-07 19:04:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:07,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89789158] [2024-11-07 19:04:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:07,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:07,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:07,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:07,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-07 19:04:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:07,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:04:07,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:07,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-07 19:04:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:07,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:04:07,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:07,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89789158] [2024-11-07 19:04:07,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89789158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:04:07,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:04:07,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:04:07,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5699947] [2024-11-07 19:04:07,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:04:07,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:04:07,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:07,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:04:07,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:04:07,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-11-07 19:04:07,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:07,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:07,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-11-07 19:04:07,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:07,959 INFO L124 PetriNetUnfolderBase]: 15/77 cut-off events. [2024-11-07 19:04:07,959 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-07 19:04:07,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 77 events. 15/77 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 177 event pairs, 1 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 49. Up to 20 conditions per place. [2024-11-07 19:04:07,960 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 19 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-07 19:04:07,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 149 flow [2024-11-07 19:04:07,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:04:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:04:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-07 19:04:07,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-11-07 19:04:07,962 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 103 flow. Second operand 4 states and 107 transitions. [2024-11-07 19:04:07,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 149 flow [2024-11-07 19:04:07,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:04:07,963 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 102 flow [2024-11-07 19:04:07,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-11-07 19:04:07,964 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2024-11-07 19:04:07,964 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 102 flow [2024-11-07 19:04:07,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:07,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:07,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:07,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-07 19:04:08,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:08,168 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:08,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash -683548118, now seen corresponding path program 1 times [2024-11-07 19:04:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:08,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873613949] [2024-11-07 19:04:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:08,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:08,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:08,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-07 19:04:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:08,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:04:08,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:08,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 19:04:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:08,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:04:08,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873613949] [2024-11-07 19:04:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873613949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:04:08,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:04:08,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:04:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386872156] [2024-11-07 19:04:08,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:04:08,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:04:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:04:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:04:08,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-11-07 19:04:08,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:08,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:08,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-11-07 19:04:08,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:08,482 INFO L124 PetriNetUnfolderBase]: 14/66 cut-off events. [2024-11-07 19:04:08,482 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-07 19:04:08,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 66 events. 14/66 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 4 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 49. Up to 31 conditions per place. [2024-11-07 19:04:08,483 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 20 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-11-07 19:04:08,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 154 flow [2024-11-07 19:04:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:04:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:04:08,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-07 19:04:08,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-11-07 19:04:08,485 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 102 flow. Second operand 4 states and 114 transitions. [2024-11-07 19:04:08,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 154 flow [2024-11-07 19:04:08,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:04:08,487 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 105 flow [2024-11-07 19:04:08,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-07 19:04:08,488 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2024-11-07 19:04:08,488 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 105 flow [2024-11-07 19:04:08,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:08,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:08,488 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:08,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-07 19:04:08,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:08,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:08,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:08,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1034755921, now seen corresponding path program 1 times [2024-11-07 19:04:08,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:08,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301996465] [2024-11-07 19:04:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:08,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:08,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:08,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:08,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-07 19:04:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:08,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 19:04:08,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:08,804 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 19:04:08,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 19:04:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:09,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:09,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:09,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301996465] [2024-11-07 19:04:09,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301996465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:09,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:09,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 7 [2024-11-07 19:04:09,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020315189] [2024-11-07 19:04:09,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:09,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-07 19:04:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-07 19:04:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-07 19:04:09,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-11-07 19:04:09,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 105 flow. Second operand has 9 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:09,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:09,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-11-07 19:04:09,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:09,731 INFO L124 PetriNetUnfolderBase]: 27/119 cut-off events. [2024-11-07 19:04:09,731 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-07 19:04:09,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 119 events. 27/119 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 3 based on Foata normal form. 12/126 useless extension candidates. Maximal degree in co-relation 81. Up to 30 conditions per place. [2024-11-07 19:04:09,732 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 26 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-11-07 19:04:09,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 217 flow [2024-11-07 19:04:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:04:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:04:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-11-07 19:04:09,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-11-07 19:04:09,734 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 105 flow. Second operand 8 states and 212 transitions. [2024-11-07 19:04:09,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 217 flow [2024-11-07 19:04:09,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 209 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:04:09,736 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 161 flow [2024-11-07 19:04:09,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=161, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-11-07 19:04:09,737 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-11-07 19:04:09,737 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 161 flow [2024-11-07 19:04:09,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:09,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:09,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:09,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-07 19:04:09,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:09,938 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:09,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:09,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2004768693, now seen corresponding path program 1 times [2024-11-07 19:04:09,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:09,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916972532] [2024-11-07 19:04:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:09,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:09,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:09,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:09,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-07 19:04:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:09,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-07 19:04:10,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:10,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:04:10,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:10,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916972532] [2024-11-07 19:04:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916972532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:04:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:04:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:04:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492702286] [2024-11-07 19:04:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:04:10,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:04:10,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:04:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:04:10,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:04:10,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:10,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:10,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:04:10,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:10,093 INFO L124 PetriNetUnfolderBase]: 21/109 cut-off events. [2024-11-07 19:04:10,094 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-11-07 19:04:10,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 109 events. 21/109 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 207 event pairs, 11 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 173. Up to 51 conditions per place. [2024-11-07 19:04:10,096 INFO L140 encePairwiseOnDemand]: 45/47 looper letters, 24 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2024-11-07 19:04:10,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 211 flow [2024-11-07 19:04:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:04:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:04:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-07 19:04:10,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2024-11-07 19:04:10,097 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 161 flow. Second operand 3 states and 89 transitions. [2024-11-07 19:04:10,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 211 flow [2024-11-07 19:04:10,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 193 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-07 19:04:10,099 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 143 flow [2024-11-07 19:04:10,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-07 19:04:10,102 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-07 19:04:10,103 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 143 flow [2024-11-07 19:04:10,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:10,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:10,103 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:10,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-07 19:04:10,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:10,304 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:10,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2031981297, now seen corresponding path program 1 times [2024-11-07 19:04:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965794792] [2024-11-07 19:04:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:10,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:10,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:10,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:10,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-07 19:04:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:10,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 19:04:10,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:10,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 19:04:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:10,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:10,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:10,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965794792] [2024-11-07 19:04:10,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965794792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:10,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:10,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-07 19:04:10,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568576736] [2024-11-07 19:04:10,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:10,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:04:10,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:10,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:04:10,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:04:10,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-11-07 19:04:10,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 143 flow. Second operand has 8 states, 8 states have (on average 23.625) internal successors, (189), 8 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:10,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:10,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-11-07 19:04:10,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:11,000 INFO L124 PetriNetUnfolderBase]: 26/115 cut-off events. [2024-11-07 19:04:11,001 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-07 19:04:11,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 115 events. 26/115 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 190 event pairs, 4 based on Foata normal form. 6/117 useless extension candidates. Maximal degree in co-relation 231. Up to 30 conditions per place. [2024-11-07 19:04:11,002 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 27 selfloop transitions, 11 changer transitions 0/52 dead transitions. [2024-11-07 19:04:11,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 243 flow [2024-11-07 19:04:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:04:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:04:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-07 19:04:11,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-07 19:04:11,004 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 143 flow. Second operand 7 states and 188 transitions. [2024-11-07 19:04:11,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 243 flow [2024-11-07 19:04:11,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:04:11,007 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 192 flow [2024-11-07 19:04:11,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2024-11-07 19:04:11,007 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-11-07 19:04:11,007 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 192 flow [2024-11-07 19:04:11,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.625) internal successors, (189), 8 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:11,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:11,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:11,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-07 19:04:11,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:11,212 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:11,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:11,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1448504088, now seen corresponding path program 1 times [2024-11-07 19:04:11,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:11,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163395167] [2024-11-07 19:04:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:11,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:11,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:11,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:11,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-07 19:04:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:11,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 19:04:11,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:11,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:04:11,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:11,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163395167] [2024-11-07 19:04:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163395167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:04:11,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:04:11,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:04:11,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791975769] [2024-11-07 19:04:11,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:04:11,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:04:11,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:04:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:04:11,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-07 19:04:11,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:11,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:11,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-07 19:04:11,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:11,401 INFO L124 PetriNetUnfolderBase]: 20/108 cut-off events. [2024-11-07 19:04:11,401 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-07 19:04:11,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 108 events. 20/108 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 11 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 263. Up to 51 conditions per place. [2024-11-07 19:04:11,402 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 24 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-11-07 19:04:11,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 41 transitions, 246 flow [2024-11-07 19:04:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:04:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:04:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-07 19:04:11,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-11-07 19:04:11,404 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 192 flow. Second operand 4 states and 102 transitions. [2024-11-07 19:04:11,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 41 transitions, 246 flow [2024-11-07 19:04:11,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 41 transitions, 232 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 19:04:11,406 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 182 flow [2024-11-07 19:04:11,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-11-07 19:04:11,407 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-11-07 19:04:11,407 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 182 flow [2024-11-07 19:04:11,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:11,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:11,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:11,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-07 19:04:11,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:11,613 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:11,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:11,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1989818688, now seen corresponding path program 1 times [2024-11-07 19:04:11,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:11,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064115982] [2024-11-07 19:04:11,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:11,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:11,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:11,616 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:11,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-07 19:04:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:11,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:04:11,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:11,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-07 19:04:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:11,772 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:04:11,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:11,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064115982] [2024-11-07 19:04:11,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064115982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:04:11,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:04:11,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:04:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245178139] [2024-11-07 19:04:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:04:11,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:04:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:04:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:04:11,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:04:11,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:11,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:11,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:04:11,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:11,917 INFO L124 PetriNetUnfolderBase]: 21/112 cut-off events. [2024-11-07 19:04:11,917 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-11-07 19:04:11,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 112 events. 21/112 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 12 based on Foata normal form. 2/113 useless extension candidates. Maximal degree in co-relation 258. Up to 52 conditions per place. [2024-11-07 19:04:11,918 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2024-11-07 19:04:11,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 44 transitions, 241 flow [2024-11-07 19:04:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:04:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:04:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-11-07 19:04:11,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5815602836879432 [2024-11-07 19:04:11,919 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 182 flow. Second operand 6 states and 164 transitions. [2024-11-07 19:04:11,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 44 transitions, 241 flow [2024-11-07 19:04:11,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 44 transitions, 235 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:04:11,921 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 187 flow [2024-11-07 19:04:11,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2024-11-07 19:04:11,922 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-11-07 19:04:11,922 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 187 flow [2024-11-07 19:04:11,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:11,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:11,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:11,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-07 19:04:12,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:12,123 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:12,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash -226414099, now seen corresponding path program 1 times [2024-11-07 19:04:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:12,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533291576] [2024-11-07 19:04:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:12,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:12,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:12,126 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:12,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-07 19:04:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:12,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:04:12,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:12,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-07 19:04:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:12,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:12,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:12,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533291576] [2024-11-07 19:04:12,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533291576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:12,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:12,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-11-07 19:04:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915791382] [2024-11-07 19:04:12,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:12,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 19:04:12,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:12,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 19:04:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-07 19:04:12,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:04:12,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 187 flow. Second operand has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:12,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:12,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:04:12,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:12,716 INFO L124 PetriNetUnfolderBase]: 18/107 cut-off events. [2024-11-07 19:04:12,716 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-07 19:04:12,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 107 events. 18/107 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 175 event pairs, 7 based on Foata normal form. 2/108 useless extension candidates. Maximal degree in co-relation 258. Up to 35 conditions per place. [2024-11-07 19:04:12,717 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 22 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2024-11-07 19:04:12,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 46 transitions, 254 flow [2024-11-07 19:04:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:04:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:04:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-11-07 19:04:12,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-11-07 19:04:12,719 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 187 flow. Second operand 8 states and 214 transitions. [2024-11-07 19:04:12,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 46 transitions, 254 flow [2024-11-07 19:04:12,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 46 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:04:12,721 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 201 flow [2024-11-07 19:04:12,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=201, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2024-11-07 19:04:12,722 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2024-11-07 19:04:12,722 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 201 flow [2024-11-07 19:04:12,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:12,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:12,723 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:12,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-07 19:04:12,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:12,923 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:12,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:12,924 INFO L85 PathProgramCache]: Analyzing trace with hash 595421104, now seen corresponding path program 2 times [2024-11-07 19:04:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:12,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338891916] [2024-11-07 19:04:12,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:04:12,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:12,927 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:12,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-07 19:04:13,010 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:04:13,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:04:13,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 19:04:13,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:13,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 19:04:13,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-07 19:04:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:13,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:13,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:13,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338891916] [2024-11-07 19:04:13,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338891916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:13,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:13,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-11-07 19:04:13,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86421972] [2024-11-07 19:04:13,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:13,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 19:04:13,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:13,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 19:04:13,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-07 19:04:14,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-07 19:04:14,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 201 flow. Second operand has 16 states, 16 states have (on average 19.25) internal successors, (308), 16 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:14,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:14,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-07 19:04:14,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:14,847 INFO L124 PetriNetUnfolderBase]: 50/197 cut-off events. [2024-11-07 19:04:14,848 INFO L125 PetriNetUnfolderBase]: For 358/358 co-relation queries the response was YES. [2024-11-07 19:04:14,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 197 events. 50/197 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 314 event pairs, 6 based on Foata normal form. 8/204 useless extension candidates. Maximal degree in co-relation 598. Up to 40 conditions per place. [2024-11-07 19:04:14,849 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 47 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-11-07 19:04:14,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 497 flow [2024-11-07 19:04:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:04:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:04:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 244 transitions. [2024-11-07 19:04:14,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47195357833655704 [2024-11-07 19:04:14,851 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 201 flow. Second operand 11 states and 244 transitions. [2024-11-07 19:04:14,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 497 flow [2024-11-07 19:04:14,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 475 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-07 19:04:14,854 INFO L231 Difference]: Finished difference. Result has 73 places, 50 transitions, 339 flow [2024-11-07 19:04:14,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=339, PETRI_PLACES=73, PETRI_TRANSITIONS=50} [2024-11-07 19:04:14,855 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-11-07 19:04:14,855 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 50 transitions, 339 flow [2024-11-07 19:04:14,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.25) internal successors, (308), 16 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:14,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:14,856 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:14,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-11-07 19:04:15,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:15,056 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:15,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash 969039282, now seen corresponding path program 2 times [2024-11-07 19:04:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:15,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338902940] [2024-11-07 19:04:15,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:04:15,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:15,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:15,059 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:15,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-07 19:04:15,126 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 19:04:15,127 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:04:15,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 19:04:15,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:15,154 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 19:04:15,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 19:04:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-07 19:04:15,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-07 19:04:15,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:15,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338902940] [2024-11-07 19:04:15,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338902940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:15,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:15,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-11-07 19:04:15,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467508727] [2024-11-07 19:04:15,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:15,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 19:04:15,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:15,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 19:04:15,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-07 19:04:16,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-07 19:04:16,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 50 transitions, 339 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:16,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:16,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-07 19:04:16,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:16,282 INFO L124 PetriNetUnfolderBase]: 48/187 cut-off events. [2024-11-07 19:04:16,282 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-11-07 19:04:16,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 187 events. 48/187 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 270 event pairs, 2 based on Foata normal form. 8/194 useless extension candidates. Maximal degree in co-relation 596. Up to 77 conditions per place. [2024-11-07 19:04:16,285 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 22 selfloop transitions, 20 changer transitions 0/53 dead transitions. [2024-11-07 19:04:16,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 53 transitions, 423 flow [2024-11-07 19:04:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:04:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:04:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-07 19:04:16,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-11-07 19:04:16,288 INFO L175 Difference]: Start difference. First operand has 73 places, 50 transitions, 339 flow. Second operand 6 states and 145 transitions. [2024-11-07 19:04:16,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 53 transitions, 423 flow [2024-11-07 19:04:16,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 53 transitions, 396 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-07 19:04:16,291 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 359 flow [2024-11-07 19:04:16,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2024-11-07 19:04:16,292 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2024-11-07 19:04:16,292 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 359 flow [2024-11-07 19:04:16,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:16,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:16,292 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:16,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-07 19:04:16,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:16,495 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:16,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1930966962, now seen corresponding path program 2 times [2024-11-07 19:04:16,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:16,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152882954] [2024-11-07 19:04:16,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:04:16,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:16,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:16,498 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:16,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-07 19:04:16,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:04:16,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:04:16,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 19:04:16,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:16,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 19:04:17,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 19:04:17,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-07 19:04:17,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-07 19:04:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:17,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:17,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2024-11-07 19:04:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:17,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152882954] [2024-11-07 19:04:17,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152882954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:17,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 18 [2024-11-07 19:04:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515012694] [2024-11-07 19:04:17,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:17,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-07 19:04:17,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-07 19:04:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-07 19:04:18,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-07 19:04:18,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 359 flow. Second operand has 19 states, 19 states have (on average 18.789473684210527) internal successors, (357), 19 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:18,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:18,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-07 19:04:18,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:19,608 INFO L124 PetriNetUnfolderBase]: 43/192 cut-off events. [2024-11-07 19:04:19,608 INFO L125 PetriNetUnfolderBase]: For 616/616 co-relation queries the response was YES. [2024-11-07 19:04:19,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 192 events. 43/192 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 323 event pairs, 10 based on Foata normal form. 2/192 useless extension candidates. Maximal degree in co-relation 617. Up to 49 conditions per place. [2024-11-07 19:04:19,609 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 39 selfloop transitions, 22 changer transitions 0/72 dead transitions. [2024-11-07 19:04:19,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 528 flow [2024-11-07 19:04:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 19:04:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 19:04:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 345 transitions. [2024-11-07 19:04:19,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4078014184397163 [2024-11-07 19:04:19,612 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 359 flow. Second operand 18 states and 345 transitions. [2024-11-07 19:04:19,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 528 flow [2024-11-07 19:04:19,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 72 transitions, 501 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:04:19,616 INFO L231 Difference]: Finished difference. Result has 89 places, 55 transitions, 414 flow [2024-11-07 19:04:19,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=414, PETRI_PLACES=89, PETRI_TRANSITIONS=55} [2024-11-07 19:04:19,616 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 44 predicate places. [2024-11-07 19:04:19,617 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 55 transitions, 414 flow [2024-11-07 19:04:19,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.789473684210527) internal successors, (357), 19 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:19,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:19,617 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:19,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-07 19:04:19,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:19,818 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:19,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:19,818 INFO L85 PathProgramCache]: Analyzing trace with hash -23103902, now seen corresponding path program 1 times [2024-11-07 19:04:19,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:19,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931511243] [2024-11-07 19:04:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:04:19,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:19,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:19,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-07 19:04:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:04:19,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 19:04:19,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:20,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-07 19:04:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:20,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:20,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:20,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931511243] [2024-11-07 19:04:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931511243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:20,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:20,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-11-07 19:04:20,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85813615] [2024-11-07 19:04:20,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:20,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:04:20,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:04:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:04:20,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:04:20,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 55 transitions, 414 flow. Second operand has 14 states, 14 states have (on average 25.857142857142858) internal successors, (362), 14 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:20,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:20,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:04:20,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:20,730 INFO L124 PetriNetUnfolderBase]: 32/167 cut-off events. [2024-11-07 19:04:20,730 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-11-07 19:04:20,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 167 events. 32/167 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 11 based on Foata normal form. 2/168 useless extension candidates. Maximal degree in co-relation 599. Up to 51 conditions per place. [2024-11-07 19:04:20,731 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 28 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2024-11-07 19:04:20,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 59 transitions, 484 flow [2024-11-07 19:04:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:04:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:04:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2024-11-07 19:04:20,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2024-11-07 19:04:20,732 INFO L175 Difference]: Start difference. First operand has 89 places, 55 transitions, 414 flow. Second operand 12 states and 314 transitions. [2024-11-07 19:04:20,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 59 transitions, 484 flow [2024-11-07 19:04:20,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 59 transitions, 429 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-11-07 19:04:20,738 INFO L231 Difference]: Finished difference. Result has 81 places, 50 transitions, 355 flow [2024-11-07 19:04:20,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=355, PETRI_PLACES=81, PETRI_TRANSITIONS=50} [2024-11-07 19:04:20,738 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2024-11-07 19:04:20,739 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 50 transitions, 355 flow [2024-11-07 19:04:20,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 25.857142857142858) internal successors, (362), 14 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:20,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:20,739 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:20,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-07 19:04:20,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:20,940 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:20,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:20,940 INFO L85 PathProgramCache]: Analyzing trace with hash -960558792, now seen corresponding path program 3 times [2024-11-07 19:04:20,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:20,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148947282] [2024-11-07 19:04:20,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:04:20,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:20,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:20,943 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:20,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-07 19:04:21,077 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-07 19:04:21,077 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:04:21,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 19:04:21,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:21,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 19:04:22,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 19:04:22,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2024-11-07 19:04:22,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-07 19:04:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:22,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:22,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2024-11-07 19:04:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:23,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:23,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148947282] [2024-11-07 19:04:23,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148947282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:23,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:23,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 22 [2024-11-07 19:04:23,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556959210] [2024-11-07 19:04:23,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:23,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-07 19:04:23,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:23,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-07 19:04:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-07 19:04:24,336 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-07 19:04:24,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 50 transitions, 355 flow. Second operand has 23 states, 23 states have (on average 18.82608695652174) internal successors, (433), 23 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:24,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:24,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-07 19:04:24,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:26,677 INFO L124 PetriNetUnfolderBase]: 54/241 cut-off events. [2024-11-07 19:04:26,677 INFO L125 PetriNetUnfolderBase]: For 855/855 co-relation queries the response was YES. [2024-11-07 19:04:26,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 241 events. 54/241 cut-off events. For 855/855 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 389 event pairs, 4 based on Foata normal form. 3/243 useless extension candidates. Maximal degree in co-relation 865. Up to 44 conditions per place. [2024-11-07 19:04:26,679 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 58 selfloop transitions, 34 changer transitions 0/103 dead transitions. [2024-11-07 19:04:26,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 802 flow [2024-11-07 19:04:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-07 19:04:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-07 19:04:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 558 transitions. [2024-11-07 19:04:26,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40939104915627295 [2024-11-07 19:04:26,682 INFO L175 Difference]: Start difference. First operand has 81 places, 50 transitions, 355 flow. Second operand 29 states and 558 transitions. [2024-11-07 19:04:26,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 802 flow [2024-11-07 19:04:26,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 103 transitions, 756 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-07 19:04:26,689 INFO L231 Difference]: Finished difference. Result has 108 places, 68 transitions, 578 flow [2024-11-07 19:04:26,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=578, PETRI_PLACES=108, PETRI_TRANSITIONS=68} [2024-11-07 19:04:26,691 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-11-07 19:04:26,691 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 68 transitions, 578 flow [2024-11-07 19:04:26,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.82608695652174) internal successors, (433), 23 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:26,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:26,692 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:26,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-07 19:04:26,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:26,893 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:26,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1087122109, now seen corresponding path program 4 times [2024-11-07 19:04:26,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326106290] [2024-11-07 19:04:26,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 19:04:26,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:26,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:26,896 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:26,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-07 19:04:26,984 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 19:04:26,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:04:26,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:04:26,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:27,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-07 19:04:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:27,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:27,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:27,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326106290] [2024-11-07 19:04:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326106290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:27,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:27,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-07 19:04:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486181955] [2024-11-07 19:04:27,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:27,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 19:04:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 19:04:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-07 19:04:27,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 47 [2024-11-07 19:04:27,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 68 transitions, 578 flow. Second operand has 18 states, 18 states have (on average 25.61111111111111) internal successors, (461), 18 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:27,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:27,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 47 [2024-11-07 19:04:27,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:28,334 INFO L124 PetriNetUnfolderBase]: 40/225 cut-off events. [2024-11-07 19:04:28,334 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2024-11-07 19:04:28,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 225 events. 40/225 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 369 event pairs, 15 based on Foata normal form. 2/226 useless extension candidates. Maximal degree in co-relation 881. Up to 67 conditions per place. [2024-11-07 19:04:28,336 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 38 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-11-07 19:04:28,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 80 transitions, 711 flow [2024-11-07 19:04:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 19:04:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 19:04:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 414 transitions. [2024-11-07 19:04:28,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.550531914893617 [2024-11-07 19:04:28,340 INFO L175 Difference]: Start difference. First operand has 108 places, 68 transitions, 578 flow. Second operand 16 states and 414 transitions. [2024-11-07 19:04:28,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 80 transitions, 711 flow [2024-11-07 19:04:28,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 80 transitions, 673 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-11-07 19:04:28,347 INFO L231 Difference]: Finished difference. Result has 113 places, 67 transitions, 575 flow [2024-11-07 19:04:28,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=575, PETRI_PLACES=113, PETRI_TRANSITIONS=67} [2024-11-07 19:04:28,348 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 68 predicate places. [2024-11-07 19:04:28,349 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 67 transitions, 575 flow [2024-11-07 19:04:28,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 25.61111111111111) internal successors, (461), 18 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:28,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:28,350 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:28,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-11-07 19:04:28,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:28,550 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:28,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:28,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1467565216, now seen corresponding path program 3 times [2024-11-07 19:04:28,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:28,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832752494] [2024-11-07 19:04:28,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:04:28,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:28,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:28,553 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:28,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-07 19:04:28,610 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 19:04:28,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:04:28,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-07 19:04:28,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:28,644 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-07 19:04:28,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-07 19:04:28,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-07 19:04:28,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-07 19:04:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-07 19:04:29,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-07 19:04:35,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:35,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832752494] [2024-11-07 19:04:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832752494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:35,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:35,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2024-11-07 19:04:35,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388677243] [2024-11-07 19:04:35,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:35,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:04:35,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:35,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:04:35,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=115, Unknown=1, NotChecked=0, Total=156 [2024-11-07 19:04:37,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-07 19:04:37,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 67 transitions, 575 flow. Second operand has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:37,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:37,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-07 19:04:37,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:38,718 INFO L124 PetriNetUnfolderBase]: 51/230 cut-off events. [2024-11-07 19:04:38,719 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2024-11-07 19:04:38,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 230 events. 51/230 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 5 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 889. Up to 62 conditions per place. [2024-11-07 19:04:38,720 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 27 selfloop transitions, 28 changer transitions 0/69 dead transitions. [2024-11-07 19:04:38,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 69 transitions, 673 flow [2024-11-07 19:04:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:04:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:04:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-07 19:04:38,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-11-07 19:04:38,721 INFO L175 Difference]: Start difference. First operand has 113 places, 67 transitions, 575 flow. Second operand 6 states and 147 transitions. [2024-11-07 19:04:38,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 69 transitions, 673 flow [2024-11-07 19:04:38,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 69 transitions, 596 flow, removed 0 selfloop flow, removed 22 redundant places. [2024-11-07 19:04:38,727 INFO L231 Difference]: Finished difference. Result has 95 places, 66 transitions, 536 flow [2024-11-07 19:04:38,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=95, PETRI_TRANSITIONS=66} [2024-11-07 19:04:38,727 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-11-07 19:04:38,728 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 66 transitions, 536 flow [2024-11-07 19:04:38,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:38,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:38,728 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:38,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-07 19:04:38,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:38,929 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:38,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash 843605457, now seen corresponding path program 2 times [2024-11-07 19:04:38,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:38,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653692073] [2024-11-07 19:04:38,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:04:38,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:38,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:38,931 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:38,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-07 19:04:39,036 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:04:39,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:04:39,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-07 19:04:39,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:39,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-07 19:04:43,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2024-11-07 19:04:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:43,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:04:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:04:45,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-07 19:04:45,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653692073] [2024-11-07 19:04:45,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653692073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:04:45,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:04:45,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2024-11-07 19:04:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537410129] [2024-11-07 19:04:45,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-07 19:04:45,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 19:04:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-07 19:04:45,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 19:04:45,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-11-07 19:04:50,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-07 19:04:50,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 66 transitions, 536 flow. Second operand has 24 states, 24 states have (on average 22.708333333333332) internal successors, (545), 24 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:50,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:04:50,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-07 19:04:50,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:04:59,406 INFO L124 PetriNetUnfolderBase]: 54/263 cut-off events. [2024-11-07 19:04:59,407 INFO L125 PetriNetUnfolderBase]: For 1239/1239 co-relation queries the response was YES. [2024-11-07 19:04:59,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 263 events. 54/263 cut-off events. For 1239/1239 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 319 event pairs, 4 based on Foata normal form. 14/276 useless extension candidates. Maximal degree in co-relation 1005. Up to 50 conditions per place. [2024-11-07 19:04:59,408 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 31 changer transitions 0/104 dead transitions. [2024-11-07 19:04:59,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 104 transitions, 919 flow [2024-11-07 19:04:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-07 19:04:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-07 19:04:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 698 transitions. [2024-11-07 19:04:59,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4950354609929078 [2024-11-07 19:04:59,411 INFO L175 Difference]: Start difference. First operand has 95 places, 66 transitions, 536 flow. Second operand 30 states and 698 transitions. [2024-11-07 19:04:59,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 104 transitions, 919 flow [2024-11-07 19:04:59,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 104 transitions, 859 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-11-07 19:04:59,417 INFO L231 Difference]: Finished difference. Result has 120 places, 66 transitions, 636 flow [2024-11-07 19:04:59,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=636, PETRI_PLACES=120, PETRI_TRANSITIONS=66} [2024-11-07 19:04:59,418 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 75 predicate places. [2024-11-07 19:04:59,418 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 66 transitions, 636 flow [2024-11-07 19:04:59,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 22.708333333333332) internal successors, (545), 24 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:04:59,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:04:59,419 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:04:59,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-07 19:04:59,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:59,620 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-07 19:04:59,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:04:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1256380394, now seen corresponding path program 3 times [2024-11-07 19:04:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-07 19:04:59,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431534136] [2024-11-07 19:04:59,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:04:59,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-07 19:04:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-07 19:04:59,622 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-07 19:04:59,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-07 19:04:59,774 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-07 19:04:59,775 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:04:59,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-07 19:04:59,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:04:59,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5